If you're concerned that you've made/found something dangerous, the most appropriate solution is to disclose it to people who can evaluate how dangerous it is, and work with them on next steps.
In your hypothetical, I would observe that Paul Christiano is close to being the person in the US government in charge of evaluating AI danger, and that he is currently involved with https://www.alignment.org/ who specifically consider issues of AI risk. I would humbly contact them and ask for guidance on how to proceed.
Be prepared to be dismissed as a crank. Remember that avoiding harm to others is more important than proving that you're right.
In your hypothetical, I would observe that Paul Christiano is close to being the person in the US government in charge of evaluating AI danger, and that he is currently involved with https://www.alignment.org/ who specifically consider issues of AI risk. I would humbly contact them and ask for guidance on how to proceed.
Be prepared to be dismissed as a crank. Remember that avoiding harm to others is more important than proving that you're right.